startproblem a8, 4,2, bj.00

Now, people, the first scare has settled something, but the cause does not leave me rest.

Yesterday, key as always short turned, does not start!
Try again, a little bit worried.
Starter turns very reluctantly, mine even with outcasts.
==References== 3 sec.
Third try as before.
==References====External links== 6 sec.
Behaviour of the causer as described above. After releasing the key, the engine is running, a b e r w i e !
As a comparison one could use a 1 cylinder with a swing wheel.The engine noise accompanied by :
click-click-click... and rrrrrrrrrrrr.... !!!!
May the description be forgiven.
After processing this perception the motor is switched off immediately.
Pure shock, valves, camshafts, motor-total damage after 31,000 km ?

Small pause inlaid, air fanned and sweat dried.

New attempt and the thing starts immediately, as if nothing had ever been, only once a thick blue cloud.

However, the feeling of happiness is greatly impaired, as I do not understand the cause.

==References====External links== 6 months, after playing several times with the standing heater on a parking lot.
I had exactly the same start problems, but the engine didn't start and the ugly sounds were spared at that time. Also after a good break everything was back to normal.

Does any of you have a suitable explanation for me ???

Mfg klaus